PMID- 36801477 OWN - NLM STAT- MEDLINE DCOM- 20230523 LR - 20230526 IS - 1532-8406 (Electronic) IS - 0883-5403 (Linking) VI - 38 IP - 6S DP - 2023 Jun TI - Image-Free Robotic-Assisted Total Knee Arthroplasty Results in Quicker Recovery but Equivalent One-Year Outcomes Compared to Conventional Total Knee Arthroplasty. PG - S232-S237 LID - S0883-5403(23)00131-6 [pii] LID - 10.1016/j.arth.2023.02.023 [doi] AB - BACKGROUND: Few studies have addressed whether robotic-assisted total knee arthroplasty (RA-TKA) significantly impacts functional outcomes. This study was conducted to determine whether image-free RA-TKA improves function compared to conventional total knee arthroplasty (C-TKA), performed without the utilization of robotics or navigation, using the Minimal Clinically Important Difference (MCID) and Patient Acceptable Symptom State (PASS) as measures of meaningful clinical improvement. METHODS: A multicenter propensity score-matched retrospective study was conducted of RA-TKA using an image-free robotic system and C-TKA cases at an average follow-up of 14 months (range, 12 months to 20 months). Consecutive patients who underwent primary unilateral TKA and had a preoperative and postoperative Knee Injury and Osteoarthritis Outcome Score-Joint Replacement (KOOS-JR) were included. The primary outcomes were the MCID and PASS for KOOS-JR. 254 RA-TKA and 762 C-TKA patients were included, with no significant differences in sex, age, body mass index, or comorbidities. RESULTS: Preoperative KOOS-JR scores were similar in the RA-TKA and C-TKA cohorts. Significantly greater improvement in KOOS-JR scores were achieved at 4 to 6 weeks postoperatively with RA-TKA compared to C-TKA. While the mean 1-year postoperative KOOS-JR was significantly higher in the RA-TKA cohort, no significant differences were found in the Delta KOOS-JR scores between the cohorts, when comparing preoperative and 1-year postoperative. No significant differences existed in the rates of MCID or PASS being achieved. CONCLUSION: Image-free RA-TKA reduces pain and improves early functional recovery compared to C-TKA at 4 to 6 weeks, but functional outcomes at 1 year are equivalent based on the MCID and PASS for KOOS-JR. CI - Copyright (c) 2023 Elsevier Inc. All rights reserved. FAU - Khan, Irfan A AU - Khan IA AD - Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania. FAU - Vaile, John R AU - Vaile JR AD - Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania. FAU - DeSimone, Cristian A AU - DeSimone CA AD - Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania. FAU - Parsell, Douglas E AU - Parsell DE AD - Mississippi Sports Medicine and Orthopaedic Center, Jackson, Mississippi. FAU - Heinze, Jared D AU - Heinze JD AD - Vail-Summit Orthopaedics and Neurosurgery Research and Education Foundation, Vail, Colorado. FAU - Alessi, Alexandra AU - Alessi A AD - Vail-Summit Orthopaedics and Neurosurgery Research and Education Foundation, Vail, Colorado. FAU - Xu, Winnie AU - Xu W AD - Columbia University Medical Center Department of Orthopaedic Surgery, New York, New York. FAU - Shah, Roshan P AU - Shah RP AD - Columbia University Medical Center Department of Orthopaedic Surgery, New York, New York. FAU - Pickering, Trevor AU - Pickering T AD - Mississippi Sports Medicine and Orthopaedic Center, Jackson, Mississippi. FAU - Cafferky, Nathan L AU - Cafferky NL AD - Vail-Summit Orthopaedics and Neurosurgery Research and Education Foundation, Vail, Colorado. FAU - Lonner, Jess H AU - Lonner JH AD - Rothman Orthopaedic Institute at Thomas Jefferson University, Philadelphia, Pennsylvania. LA - eng PT - Journal Article PT - Multicenter Study DEP - 20230218 PL - United States TA - J Arthroplasty JT - The Journal of arthroplasty JID - 8703515 SB - IM MH - Humans MH - *Arthroplasty, Replacement, Knee MH - Knee Joint/surgery MH - Treatment Outcome MH - Retrospective Studies MH - Pain, Postoperative/surgery MH - Patient Reported Outcome Measures MH - *Osteoarthritis, Knee/surgery OTO - NOTNLM OT - MCID OT - PASS OT - conventional TKA OT - image free robotics OT - robotic-assisted TKA OT - total knee arthroplasty EDAT- 2023/02/22 06:00 MHDA- 2023/05/23 06:42 CRDT- 2023/02/21 16:21 PHST- 2022/11/07 00:00 [received] PHST- 2023/02/06 00:00 [revised] PHST- 2023/02/11 00:00 [accepted] PHST- 2023/05/23 06:42 [medline] PHST- 2023/02/22 06:00 [pubmed] PHST- 2023/02/21 16:21 [entrez] AID - S0883-5403(23)00131-6 [pii] AID - 10.1016/j.arth.2023.02.023 [doi] PST - ppublish SO - J Arthroplasty. 2023 Jun;38(6S):S232-S237. doi: 10.1016/j.arth.2023.02.023. Epub 2023 Feb 18.